Samsung MH SERIES Spécifications télécharger pdf (Page 55)

Samsung Electronics54

Ye s

Troubleshooting

Ye s

6-3-9 When the compressor does not operate

1. Checklist :

1) Is the Comp. under the operating conditions? (cooling operating of A, B(C) room)

2) Is the power voltage normal? (the rating voltage ±10% range)

3) Is the connector connection of Comp. good?

4) The Comp. is operated on and off in accordance with the operating conditions of indoor unit of A(B, C) room.

2. Troubleshooting procedure

✳ Comp. A (B) operating conditions

(1) Comp. A : Comp. on /off control in accordance with the A room during the heating and cooling indoor unit operation

(2) Comp. B : Comp. on /off control in accordance with the B(C) room during the heating and cooling indoor unit operation

✳ Comp. A(B) power measuring terminal

(1) Comp. A measuring ; RY73 (4) ↔ RY72 (4)

(2) Comp. B measuring ; RY71 (4) ↔ RY72 (4)

(3) Power input ; RY72 (3) ↔ RY73(3)

*Refer to the power measuring terminal

RED

BLK

RY73

RY71

BLK

RED

WHT

RY72

(3)

(4)

(3)

(4)

(3)

(4)

Keep Comp. off

Normal

Defect of Comp. and running condenser

→ Replace

Defect of RY72, 73 (Comp. B) and

RY71(Comp. A) contact and coil → Replace

Defect of IC06 output

→ Replace

Defect of IC04 (micom)

→ Replace

Normal (Comp. off)

Apply the outdoor power and operate the indoor unit A(B,C,D)

in the cooling mode.

Normal

(Comp. off)

Has 3 minutes passed Comp. after the power initial and Comp.

on/off

Is Comp. on?

Is the voltage of pin #14, 13(15) at low

(DC 0.7V)?

Is the voltage of pin #50, 51(52) of IC04 (micom) at

high (DC 5V)?

Is Comp. under the operating condition?

Is the voltage (the rating voltage ±10% range) shown across the

terminal of Comp. power applied?

Is the Comp. under the operating condition?

DB98-20241A(1)_2 10/26/04 4:18 PM Page 54

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Samsung MH SERIES Spécifications Page 55

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